Delay Circuits
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As of control rechargeable delay circuit Under normal circumstances, when there is no input signal, the transistor VTi off. VTz conduction, the output U. Low potential. When U... -
As one of the thyristor type delay circuit The so-called cut-off delay, that is, after a period of delay after the closure of the thyristor. The delay time of the circuit withi.. -
As shown having a multi-stage delay circuit is output. The operational amplifier circuit used as comparators, operational amplifier A1 when the applied voltage-inverting input .. -
As shown in FIG touch delay switch is a CMOS NAND gate composition, can delay about 10 seconds, often used in street corridor, home door lights automatic control. .. -
As shown in Fig division factor is optional delay circuit. Circuit consists of two 7-bit binary serial counter CC4024, controlled pulse source (gate 1, 2 composition) and the i.. -
As shown in the circuit with a set of sound and light control touch three functions into one to form a fully functional delay section light switch circuit as shown in FIG. Part.. -
As shown in the telephone table lamp, night ringing or when off-hook light will automatically light up, hang up after delay 45s lamp self-extinguish. Normally used for general .. -
As shown mainly by the touch-delay switch one pair of D flip-flop CD4013 composed, it can be used in some machines power switch, delay switch is also used as lighting, it also .. -
Battery-powered light control delay lighting a small lamp, a sudden power outage or night to ask a blown fuse, the room was dark, it is difficult to find a match and candles: S.. -
Bedside door fixture delay circuit has a simple structure, the advantages of affordable, the circuit with a hex inverter CD4069 composition. .. -
But can not speak can be a good sound, light control stairs walkway lighting cast into the confirmation, this circuit has a high immunity under Tuo can, and indeed the soft-sta.. -
By inverter Gl, delay and width morning circuit 02 (CD4069) and RC integrating circuit configuration shown. When not gate output high when OI, C capacitor through Rl, D charge,.. -
By using a modified piezoelectric ceramics ashamed acoustic-electric transducer sound, light twist stairs walkway delay delayed lighting switch, circuit structure was relativel.. -
CD4069 is a digital integrated circuit fabrication using boron to delay light touch, it also uses j -wire connection force method, it can directly replace ordinary light switch.. -
Circuit The figure is sound, light, touch control delay self-extinguishing switch three electrical schematic diagram of the circuit from the power circuit, the signal conversio.. -
Circuit shown in Figure 2-48. Circle 2-48 (a) using 4.5V battery powered; Fig. 2-48 (b) AC capacitors drop voltage supply. Figure 2-48 (a) the delay time is determined by R3, R.. -
Circuit shown in Figure 2-49. The circuit is very simple, cold PTC thermistor element, jump characteristic thermal resistance of the lamp to control delay time. Usually the del.. -
The supply of circuit becomes from a AC line in the J1. This voltage can be from a separate transformer 2X12V (the prices of materials that I give it is for 2X12V AC), from existing coil 12V in their M/T of power amplifier or if it cannot become somebody.... -
The Sallen-Key realization of a 5.25-MHz, three-pole Butterworth filter has a gain of 2V/V and can drive 75 back-terminated coax with an overall gain of 1 (Figure 1). Used to reconstruct component-video (Y, Pb, Pr) and RGB signals, this filter has an.... -
Many designers use small pulse generators to delay signals, open timing windows, drive sample/hold circuits, and other functions. Though the hardware implementation of these generators does not pose any problems, the lack of dedicated circuitry sometimes....
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Generating complementary clock signals in a Spice simulation is an easy task. However, this task gets much harder if you need to introduce some dead time into the signals. This difficulty is especially true when you`re dealing with a....
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In a CCD (charge-coupled device), packets of charges shift across the array. The transistor array, also called a bucket-brigade shift register, receives drive from a dual-phase clock signal. Dual-phase clock signals comprise two synchronized clock signals....
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The AD8055-based amplifier has greater-than-100-MHz bandwidth, fully adequate for the 10-MHz oscilloscope. Its input impedance is 1 M in parallel with 30 pF to match the oscilloscope`s input and its low-capacitance probes. Figure 2b shows the final eye....
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When activated by pressing a button, this time delay relay will activate a load after a specified amount of time. This time is adjustable to whatever you want simply by changing the value of a resistor and/or capacitor. The current capacity of the circuit is.... -
Transient overloads are not short circuits but can push the power supply above its nominal load value. This scenario occurs with typical loads such as printer heads and small motors. When facing such a load profile, the power supply can easily trigger its....
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The Saver V5.0 runs simple clock emulation program, turns a night light on and off with preset time, say 19:00 to 22:00 everyday. The design features low cost, easy installation, no battery backup and no EMI. The AT89C2051 uses external oscillator generated.... -
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This page shows three circuits for using the 555 timer IC as a photocell controlled train detector. The circuit is shown driving light emitting diodes but any load of less than 200 milliamps could be used. Shown on the schematic is a secondary.... -
The following are LM555 timer circuits that have unusual functions. Designed to time a sports event; In this circuit the GREEN output is adjusted to be on for 3 minutes and then the RED output is set for 1 minute in a repeating cycle. Each time the light.... -
A switched timer for intervals of 5 to 30 minutes incremented in 5 minute steps. Simple to build, simple to make, nothing too complicated here. However you must use the CMOS type 555 timer designated the 7555, a normal 555 timer will not work here due to the.... -
A switched timer with equal make and equal space periods timing adjustable from over 6 minutes to 38 minutes. This timer circuit is similar to the 5 to 30 minute timer except that when switch S1 is closed, the on/off action of the circuit will continue.... -
This circuit is intended to let the user turn off a lamp by means of a switch placed far from bed, allowing him enough time to lie down before the lamp really switches off. 15 seconds delayed switch-off A good idea for bedroom lamps. Obviously, users will....
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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